.price-history-chart {
     background: white;
     border-radius: 12px;
     box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
     padding: 24px;
     width: 100%;
     padding: 10px;
 }

 .price-history-chart .chart-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
     margin-bottom: 24px;
     flex-wrap: wrap;
     gap: 16px;
 }

 .price-history-chart .product-info h2 {
     color: #1a1a1a;
     font-size: 24px;
     font-weight: 600;
     margin-bottom: 8px;
 }

 .price-history-chart .current-price {
     font-size: 28px;
     font-weight: 700;
     color: #2563eb;
 }

 .price-history-chart .price-change {
     font-size: 14px;
     font-weight: 500;
     margin-top: 4px;
 }

 .price-history-chart .price-change.positive {
     color: #dc2626;
 }

 .price-history-chart .price-change.negative {
     color: #059669;
 }

 .price-history-chart .duration-buttons {
     display: flex;
     gap: 8px;
     background: #f1f5f9;
     padding: 4px;
     border-radius: 8px;
 }

 .price-history-chart .duration-btn {
     padding: 8px 16px;
     border: none;
     background: transparent;
     color: #64748b;
     font-size: 14px;
     font-weight: 500;
     border-radius: 6px;
     cursor: pointer;
     transition: all 0.2s ease;
 }

 .price-history-chart .duration-btn:hover {
     background: #e2e8f0;
 }

 .price-history-chart .duration-btn.active {
     background: #2563eb;
     color: white;
 }

 .price-history-chart .chart-wrapper {
     position: relative;
     height: 250px;
     margin-top: 20px;
 }

 @media (max-width: 768px) {
     .price-history-chart .chart-header {
         flex-direction: column;
         align-items: flex-start;
     }

     .price-history-chart .duration-buttons {
         width: 100%;
         overflow-x: auto;
     }

     .price-history-chart .duration-btn {
         white-space: nowrap;
         min-width: 70px;
     }
 }